You can start working at Home Depot once you turn 16 years old. But to work customer service you must be 18.
As a minimum age requirement, you must be at least 16 years old to work at Walmart and 18 at Sam's Club. Certain positions, however, require a minimum age of 18. As you prepare to complete your application have your prior work history available.
Look under the Interaction settings for “Call Audio Routing” and tap on it. Change the setting from “Automatic” (the default) to “Speaker” to make speakerphone the default for all calls made to and from the iPhone. Exit out of Settings as usual.
You can't turn off the sound of the keypad on an iPhone when you are actually dialing, but you can turn your ringer switch on the left side of your phone (above the volume buttons) to the "off" position. This will stop your telephone keypad making any noise when dialing.